Display an image in mvc

Hello, I'd like some help.

I have the following controller to register an image and some fields, with the property of the image being string :

        [HttpPost]
        [ValidateInput(false)]
        [ValidateAntiForgeryToken]
        public ActionResult Cadastrar(NoticiaViewModel vm, HttpPostedFileBase file)
        {
            try
            {
                vm.ComboCategoriaId = new CategoriaRepositorio().BuscarTodos().Select(x => new SelectListItem { Text = x.NomeCategoria, Value = Convert.ToString(x.CategoriaId) });
                if (!ModelState.IsValid)
                {
                    return View(vm);
                }
                var mapper = Mapper.Map<NoticiaViewModel, Noticia>(vm);
                _repositorio.Salvar(mapper);
                if (file != null)
                {
                    String[] strName = file.FileName.Split('.');
                    String strExt = strName[strName.Count() - 1];
                    string pathSave = String.Format("{0}{1}.{2}", Server.MapPath("~/Imagem/noticias/"), mapper.NoticiaId, strExt);
                    String pathBase = String.Format("/Imagem/noticias/{0}.{1}", mapper.NoticiaId, strExt);
                    file.SaveAs(pathSave);
                    mapper.Imagem = pathSave;
                    _repositorio.Atualizar(mapper);
                }

                TempData["mensagem"] = "Noticia cadastrada com sucesso";
                return RedirectToAction("Index");
            }
            catch (Exception ex)
            {
                ModelState.AddModelError("", ex.Message);
                return View();
            }
        }

So long, I record the path where my image is. The problem is to show it:

        public ActionResult Visualizar(int id)
        {
            try
            {
                Noticia noticia = _repositorio.BuscarPorId(id);
                if (noticia == null)
                {
                    return HttpNotFound();
                }
                var mapper = Mapper.Map<Noticia, NoticiaViewModel>(noticia);
                return View(mapper);
            }
            catch (Exception ex)
            {
                ModelState.AddModelError("", ex.Message);
                return View();
            }
        }

I'm using this to bring the data from a particular database:

The View looks like this:

<div class="panel-body">
        <div class="col-md-12">
            <div class="form-group">
                <small class="text-right">@Model.DataCadastro</small>
            </div>
            <div class="form-group">
                <h3 class="text-left">Categoria: <b>@Model.Categoria.NomeCategoria</b></h3>
            </div>
            <div class="form-group">
                <h2 class="text-center">Título: @Model.Titulo</h2>
            </div>

            <div class="form-group">
                @MvcHtmlString.Create(Model.Descricao)
            </div>
            <div class="">
                <img src="@Model.Imagem" />
            </div>
        </div>
    </div> 

But the image does not appear.

Can anyone give me a hand?